US5304445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same
Assignee: Resonac Corp
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Filing: 1993-02-10
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Granted: 1994-04-19
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Expires: 2013-02-10
Abstract
Abstract Disclosed are a phthalocyanine composition which comprises having main diffraction peaks at 7.5°, 22.5°, 24.3°, 25.3° and 28.6° of Bragg angles (2θ±0.2°) in an X-ray diffraction spectrum with Cu Kα, a process for preparing the same, an electrophotographic photoreceptor using the same and a coating solution for a charge generation layer containing the same.
Inventors
- 👤 Mikio Itagaki
- 👤 Shigeru Hayashida
- 👤 Megumi Matsui
- 👤 Hiroko Ishikawa
- 👤 Yoshii Morishita
- 👤 Takayuki Akimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:38
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696; C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0033; C09B67/0034; C09B67/0035; C09D; C09D129/00; C09D129/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
An elecrophotographic photoreceptor having a photoconductive layer containing an organic photoconductive substance on a conductive substrate, charaterized in that said organic photoconductive substance is a phthalocyanine composition having main diffraction peaks at 7.5°, 22.5°, 24.3°, 25.3° and 28.6° of Bragg angles (2θ±0.2°) in an X-ray diffraction spectrum with Cu Kα, prepared by mixing a titanylphthalocyanine and a halogenated metal phthalocyanine in which a central metal is trivalent to prepare a phthalocyanine mixture, making the mixture amorphous by an acid pasting method, washing the amorphous mixture with water until a washing water after washing has a pH of 3 to 6 and a conductivity of 10 to 300 μS/cm, and then treating the mixture with an organic solvent to convert a crystal form of the composition.
Claim 2
Dependent Claim
125 words
An elecrophotographic photoreceptor having a photoconductive layer containing an organic photoconductive substance on a conductive substrate, charaterized in that said organic photoconductive substance is a phthalocyanine composition having main diffraction peaks at 7.5°, 22.5°, 24.3°, 25.3° and 28.6° of Bragg angles (2θ±0.2°) in an X-ray diffraction spectrum with Cu Kα, prepared by mixing a titanylphthalocyanine and a halogenated metal phthalocyanine in which a central metal is trivalent to prepare a phthalocyanine mixture, making the mixture amorphous by an acid pasting method, washing the amorphous mixture with water until a washing water after washing has a pH of 3 to 6 and a conductivity of 10 to 300 μS/cm, and then treating the mixture with an organic solvent to convert a crystal form of the composition.
Claim 3
Dependent Claim
28 words
The electrophotographic photoreceptor according to claim 1 wherein the washing water after washing has a pH of 3 to 6 and a conductivity of 10 to 100 μS/cm.
Claim 4
Dependent Claim
111 words
A double-layered type electrophotographic photoreceptor which comprises a charge generation layer containing the phthalocyanine composition according to claim 1 as a charge generating material, and a charge transport layer containing a benzidine derivative represented by the following formula (I): ##STR3## wherein R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, a fluoroalkyl group or a fluoroalkoxy group, two R 3 s each independently represents a hydrogen atom or an alkyl group, Ar 1 and Ar 2 each independently represents an aryl group, and k, l, m, and n each independently represents an integer of 0 to 5.
Claim 5
Dependent Claim
27 words
The electrophotographic photoreceptor according to claim 3 wherein said charge generation layer and the charge transport layer are formed on a conductive support successively in this order.
References Cited (Backward Citations)
US5134048A
Cited
US5252417A
Cited
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